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<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="./MyPromise.js"></script>
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<body>
  <script>
    const p = new MyPromise((resolve, reject) => {
      resolve('111')
    })
    console.log(p)
    p.then(res => {
      console.log(res)
    }, error => {
      console.log(error)
    })
  </script>
</body>

</html>